Drill-rod grab.



J. W. YOUNG.

DRILL BUD GRAB.

APPLIoATIon rum 20.13, 19u.

Patented Dec.31,191.2.v

3 SHEETS-SHEET 1.

J. W. YOUNG. DRILL ROD GRAB. APPLICATION FILED 1320.134, 1911.

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J. W. YOUNG. DRILL ROD GRAB. APPLIOATION FILED 1320.13, 1911.L

1,048,630. Patented Dec.31,1912.

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@wmf M @JW/ ...y #JWM EAMES W. YOUE'G, OF FULLERTON, CALIFORNIA.

'DRILL-ROB GRAB.

Specification of 'Letters Patent.

i .elenco Application tiled December 13, 1911.

To all whom, it may concern Be it known that l, JAMns W. Yonne, acitizen of the United States, residing at Fullerton, in the county ofOrange and State of {'lnlifornie, have invented certain new and usefullinprovt-,inents in Drilllod Grabs, of which the following is nspecification.

This invention relates to improvements in devices .for recovering losttools in oil wells and the like and its object is to produce a device ofthis class adapted to grasp e tool or object that may be wedged in *thew-ell at any point above the bottoni thereof orthnt may be resting uponthe bottom; the construction of the device is such that when a purchaseupon the lost tool or article is olotained the .eine een be released andagain obtained as many times as desired or :is may be necessary. Losttools or portions thereof may be lodged in the well or upon the bottomthereof in :in inclined position with one end resting against the wellof the Well so that no ordinary gi ab device could be slipped over theend thereof, but my improved device is adapted to obtain a pur chaseupon the body of the tool and to jar or move the same until it can bedislodged or so positioned that e. purchase upon its end may beobtained.

A complete description of the device is to he hed in the followingspeciiieation, pointed out, in the claims and illustrated in theeccoinpenying drawings which form a part of' the specification und inwhich-- Figure 1 is n side elevation of my improved device with thestein depressed and jaws open. 2 is n. front elevation partly in sectionwith stein depressed and stop plete inoperative. Fig. 3 is e frontelevation, partly in section, with stop plete operative. Fig. 4 is afront elevation of the device, in section, with the stern raised, undjaws closed.. Fig. 5 is a top plan. Fig. 6 is a front elevation of theshell. Fig. 7 is n bottom plan with mechanism removed except uideblocks. Fig. 8 is a front elevation of the stem. Fig. 9 is a sideelevation of the same partly in section. Figs. l0, 11 and 1:2 are viewsof one of the jews in three posi tions. Figs. 13 to 26 inclusive aredetails.

vLilie reference characters indicate corresponding parts throughout theseveral views.

l is the shell or easing of the tool ably formed with the Qeverel opeshown re for 'lightY .il

Patented Dec. 31, 1912. serial No. 665,468.

else; the upper end of the casing terminates in n neck 2, square inhorizontal section and through which und into the easing the stem 8projects. To the lower end of the casing e. plurality of tapered jaws 4,made integral with connections 5 that are pivotally secured to theeasing by screws 6 or other fastening means, are secured. The jaws 4 lieWholly outside the casing und are therefore not hampered in theiroperations which consist of opening;v and closing in a, mannerhereinafter described and so that gravity will keep them open. The upperend of the stem 3is` threaded as at 7 for connection With the liftingmechanism, not shown, and the body of the said stem is provided withintegral shoulders 8 that come ineontact with the nec-lr 2 of the toolwhen the stem is drawn upward'and prevent withdrawal of the same fromthe casing. v

Upon the front face of the stem 3, which is the face partly shown inFigs. 2, 3 and 4 dnd shown in full in Fig. 8, a portion 9 is formedbelow the shoulder 8 and the same is provided with a ,slot 10 as shownand in this slotted portion of the portion 9 a finger ill is disposedupon a pivot 11 that enters Y the stem and is provided with a frictionspring 11, a washer and e nut. The portion 9 is the front face of partof the stem arzl extends from the shoulder 8 to a. shoulder .i

formed upon the front and rear and one of the side feces of the stem.The side face of the stem wherein the shoulder 1Q is formed, which isthe side face illustrated in Fig. 1, is formed with an intermediateshoulder 13 between the shoulders 8 and 12 and this shoulder is likewiseformed in the portion 9.

il and 15 are guides secured to the inner surface of the casing betweenwhich the stern oscillntes. l

1G n. stop plete pivoted Within the easing:r upon e pin 17, the ends ofwhich lie in the said casing, -and disposed opposite a side face thereofadapted for Contact with the shoulder 13 of the adjacent face of thestem. A lug 18 is made integral with the stop plate 18 for engagementwith the slotted portion 19 of :i sliding plate 20 whereby one end ofthis plate is supported; the lower horizontal edge of this plate isformed with n shoulder 21 and the narrow end of the plete is mounted ina recessed guide secured to the inner surface of the casing'. The. plateQ0 is further provided wit-li r. ein 23 that inwardly into the recessedport-ion 10 of the stem and which serves as a stop for the plate 20 whenit cornes in Contact with one inner edge of the portion 9 of said stein;the said pin 253 is also adapted for contact wit-h the point of finger11 when this linger after having been raised by tlVJ stein 3 above thepin 23 descends. Should the point of linger 1l chance to be inserted asa wedge between 10 the pin and the adjacent inner edge of the portion 9the plate 20 will be slid away from the guide 22 drawing plate 16 withit but should the finger 11 descend upon the opposite side of this pin28 it will force the 15 plate 2O in the opposite direction or in adirection toward guide 22.

24 is a guide plate secured by screws 25 to the casing and its lowerextremity is i projected inwardly to serve as a guide for 90 the plate20 and to keep the saine in engagement with the lug 18 of stop plate 16and it (guide plate 24) is disposed adjacent the front face of the stem.

Below the point of the shoulders 12 upon 25 the stern the saine is madesquare in horizontal section as Ashown in Figs. 18 and 19 and part ofits central portion is cut away, thereby foriningleg-s 25 and a core 2Gdisposed between the said legs and provided with vertically disposedrecesses 27; the said core extending from near the upper extremities ofthe legs to the ends thereof ,and the recesses extending beyond t-helegs and through the base 2S ot the stem. The four corners of the base28 are each adapted to removably reside in a seated-out portion 29 ofone of the jaw connections 5 at the base of the curved walls 30 of thatconnection which walls are separated by a rib 31 adapted for engagementwith the recessed cores.

Operation: l/Vhen pressure is exerted upon the upper end of the stem 3the base of the stern 1s pressed against the seats 29 thus forcing thejaws 4 apart. If the stem in descending to the seats 29 caused thefinger 11 to wedge itself between the pin 23 of plate 20 and theadjacent inner edge of the stem-portion 9 the sliding plate 20 will havebeen forced toward Ythe guide 22 drawing with it the pivoted stop plate16 which will prevent the shoulder 13 being drawn above the lowerhorizontal edge of the said stop plat/e. In thisposition the base of thestem 3 will be retained a short distance above the seats 29 in thewidest part of the curved walls 30 of the jaw connections and in thisposition the jaws 4 are locked open. To close the jaws the stein mustybe reciprocated until the linger l1 is worked down upon the oppositeside of the pin 23 thus forcing the` sliding plate 20 with stop plate 16in a direct-ion away from'the guide 22 so that the shoulder 13 ot thestein il may pass the said stop plate 1G and the stein withdrawn themaximum dist-ance out of the casing or until the shoulder 8 of the sternrides against the neck 2 of the casing; the base ot the stem will nowreside in the upper end of the curved walls 30 of the jaw connectionsthus forcing the connection."` apart and bringing the yjaws 4 togethertightly. ',l'he jaws are placed over the lost tool while in their openposition and when in eiigagenient with the same the operation lastdescribed is performed thus causing the device to obtain a purchase uponthe end of the tool. The jaws 4 are so constructed with teeth disposedin three planes on each jaw that a purchase may be` had upon the end orbody of inost any object and a purchase upon the body portion will besutlicient to dislodge the object in all events and work it into anupright position when the jaws can be slipped over the end of the sameand the object withdrawn.

iVhat is claimed is 1. In a device of the class described, a casingformed with a neck at one extremity, a stein slidably secured withinsaid casing partially hollowed above its base and provided with aplurality of stop shoulders and with a slotted front face, a lingerpivotally carried by said stein and disposed within the slotted portionof its front face, a recessed guide secured within said casing, a stopplate pivotillly disposed within said casing, a` lug made integral withsaid stop plate, nieans secured to said lug partially disposed withinthe said recessed guide operable through the medium of the said finger,jaws disposed wholly outside the casing made integral with connectionspivotally secured within said easing, the said jaw connections eachbeing formed with curved walls ,capable of jaw-locking engagement withthe base'ot the aforesaid stem, a rib between said walls and meansdisposed within the hollowed portion of said stein for cooperation withthe said rib.

2. In a device of the class described, a casing formed with a neck atone extremity, a

stem slidably secured within said casing provided with a pluralityof-stop shoulders and with a slotted front face, a finger pivot;

ally carried by said stem and disposed with! in the slotted portion ofits front face, a ren cessed guide secured within said casing, a stopplate pivotally disposed within said casing, a lug made integral withsaid stop plate, means secured to said lug partially disposed within thesaid recessed guide operable through the medium of the said finger, arecessed core formed within said stem, jaws disposed wholly outside thecasing made integral with connections pivotally secured within the saidcasing, the said jaw connections each being formed with curved wallscapable of jaw-locking engagement with the base ot' the aforesaid stem,and a rib for coperation with the aforesaid recessed core.

3. In a device of the class described, a casing formed with a neck atone extremity, a stein slidably secured within said casing provided witha plurality of stop shoulders and with a slotted front face, a fingerpivotally carried by said stern and disposed Within the slotted portionof its front face, a recessed guide secured within said casing, aslotted sliding plate disposed partly within said guide operable by saidnger, stop means pivotally disposed within the casing capa-i bitol`engagement with one of the shoulders of the said stern and operablyconnected to the said slotted sliding plate, a recessed core formedwithin said Stem, jaws disposed wholly outside the casing made integralwith connections pivotally secured Wit-hin lbe aid easing, the said jawconnections urli boing formed with curved walls capable ti' Iiawlorlringengagement with the base of tn' a'oresaid stem, and a rib between midwalls. l'or coperation with the aforesaid recessed core.

4: In a device of the class described, a casing formed with a neck atone extremity, a stop plato pivotally disposed within said casing, a lugmade integral with said stop plate, a stem slidably secured Within saidcasing provided with a plurality of stop shoulders one of which iscapable of engagement with the said stop plate and with a slotted frontface, a finger pivotally carried by said stem and disposed Within theslotted portion of its front face, a guide, a slotted sliding plateoperable by said finger disposed partly within said guide and connectedto the aforesaid stop plate, a recessed core formedI within said stem,jaws disposed Wholly outside the casing made integral with connectionsivotally secured within the said casing, t e said jaw connections eachbeing formed with curved walls capable of jaw-locking engagement withthe base of the aforesaid stem and a rib between said walls forcooperation With the aforesaid recessed core.

In testimony that I claim the foregoing as n1 own I have hereto aixed mysignature 1n the presence of two subscribing witnesses.

JAMES W. YOUNG. lVitnesses FRANK M. Fox, EDWARD E. BALCOM.

